Nato chief fears Ukraine war could become a wider conflict

Nato Secretary General Jens Stoltenberg (Terje Bendiksby/NTB Scanpix via AP/PA)

The head of Nato has expressed concern that the fighting in Ukraine could spin out of control and become a war between Russia and Nato.

“If things go wrong, they can go horribly wrong,” Nato Secretary-General Jens Stoltenberg told Norwegian broadcaster NRK.